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- W837279600 abstract "Abstract Eu3+-activated CaTiO3 red phosphor is synthesized by the solid-state reaction method and its structural and optical properties are investigated using X-ray diffraction analysis, photoluminescence (PL) analysis, PL excitation (PLE) spectroscopy, and PL lifetime measurements. The effects of calcination condition (temperature, duration, and Eu dopant concentration) on the structural and Eu3+ emission properties are studied in detail. Temperature dependences of the PL intensity and decay time at T = 20–300 K are measured and analyzed on the basis of the thermal quenching model. It has been found that CaTiO3 can be formed at activation energy of ∼0.4 eV, which is considerably lower than the thermal activation energy (∼1.0 eV) of Eu3+ in the CaTiO3 host. Thermal quenching of the Eu3+ emission has also been observed to occur at an energy of ∼0.25 eV, determined from the temperature-dependent luminescence intensity and decay time analyses. The schematic energy-level diagram for Eu3+ in the CaTiO3 host is also proposed for the sake of a better understanding of the PL and PLE processes in this phosphor system." @default.
- W837279600 created "2016-06-24" @default.
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- W837279600 date "2015-10-01" @default.
- W837279600 modified "2023-09-24" @default.
- W837279600 title "Synthesis condition and structural/luminescent properties of CaTiO3:Eu3+ red phosphor" @default.
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- W837279600 doi "https://doi.org/10.1016/j.jallcom.2015.06.200" @default.
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